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/*
* Copyright 2023 jacqueline <me@jacqueline.id.au>
*
* SPDX-License-Identifier: GPL-3.0-only
*/
#pragma once
#include <stdint.h>
#include <functional>
#include "esp_err.h"
#include "result.hpp"
#include "gpio_expander.hpp"
namespace drivers {
/*
* Driver for a two-channel digital potentiometer, with steps measured in
* decibels.
*/
class DigitalPot {
public:
explicit DigitalPot(GpioExpander* gpios);
~DigitalPot() {}
// Not copyable or movable.
DigitalPot(const DigitalPot&) = delete;
DigitalPot& operator=(const DigitalPot&) = delete;
enum class Channel {
kLeft,
kRight,
};
auto SetRelative(int_fast8_t change) -> void;
auto SetRelative(Channel ch, int_fast8_t change) -> void;
auto SetZeroCrossDetect(bool enabled) -> void;
auto GetMaxAttenuation() -> int_fast8_t;
auto GetMinAttenuation() -> int_fast8_t;
private:
GpioExpander* gpios_;
};
} // namespace drivers
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